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There is another way of circumventing the ASCII 9. The OUT
command sends information directly to the printer without
going through the MBASIC operating system. A sample program
which performs this OUT routine is shown below. The program
is meant to be a subroutine that sends a 9 to the printer whenever
it is called.
500 IF INP(21) AND &H20 THEN 50 : REM check
printer
status
510 OUT 20,9
: REM send a nine out printer port
520 OUT 23,0 : REM toggle strobe signal off
530 OUT 23,1
: REM toggle strobe signal on
540 RETURN
94